Percentage of variation in <i>P. falciparum</i> (Pf) and <i>P. vivax</i> (Pv) phenotypes explained by environmental factors (and their interactions) in the statistical analyses.
<p>In parentheses, <i>p</i> is the <i>p-value</i>; in bold, <i>p-value</i><10<sup>−3</sup>.</p>a<p>Retained because of significant interaction with Age.</p